//
//  CaculatorTwo.h
//  链式编程01
//
//  Created by 许卫星 on 17/2/13.
//  Copyright © 2017年 许卫星. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface CaculatorTwo : NSObject
@property (nonatomic, assign) NSInteger result;

- (CaculatorTwo *(^)(int index))add;

@end
